iPhone 8 May Replace Touch ID With Acoustic Imaging, Hints Recent Patent

This patent, although very timely, doesn't necessarily mean that Apple will embed acoustic imaging in the iPhone 8. Apple has been granted a new patent titled 'Acoustic Imaging System Architecture' that describes how the company plans to embed sound imaging for fingerprint reading through the display. The latest leak sheds some light on the rumoured wireless charging technology, and a new patent suggests how the iPhone 8 will embed fingerprint scanning technology without a Touch ID sensor. Plus, acoustic imaging can also read ear prints and hand prints as well, expanding ways on how it can be used on an iPhone. A separate report from Reuters also sheds light on wireless technology, claiming that all is not yet lost.


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Indeed, at this early stage in the iPhone 8 rumor mill, uncertainty surrounding the future of Touch ID could be down to misconstrued information or confusion over a semantic quibble. The resulting scan data is transmitted as electric signals which subsequently inform an onboard image resolver to enable it to create a two-dimensional map of the surface. A sensing mode then monitors reflections, attenuations, and diffractions in the sound waves caused by a foreign body – such as a finger – coming into contact with the responsive substrate.According to the filing, the ridges in a fingerprint create an identifiable acoustic impedance mismatch. A new Apple patent application published on Thursday and discovered by AppleInsider offers a case in point.The patent is called " Acoustic imaging system architecture " and describes a method by which a conventional capacitive sensor like Touch ID is replaced by an array of acoustic transducers laid out beneath an iPhone display or in its protective housing.Some embodiments describe the transducers as capable of generating acoustic waves, or pulses, which propagate through different substrates, including an iPhone's coverglass. Similar to existing biometric security technology, the digital map is then compared against a database to authenticate the user.Crucially, the system is capable of being configured to scan for particular body parts like a user's ear or a skin pattern, in order to determine how the device is being held.


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